my new phone won’t let me login to my email using my original email from my last phone
Is this for an email account or it won't let you log in with your Apple ID? What happens when you try? Error message(s)?
If an email account, have you tried deleting the account, restarting the device, and then adding the account back?
Mail - If you can’t send email on your iPhone, iPad, or iPod touch
Mail - If you can't receive email on your iPhone, iPad, or iPod touch